im working on a 1980 sa. its been sitting for about a year. cold, dry compression was approx.. 70-75 psi. is this alright? also im having trouble with the carb. it floods with the fuel pump on. not just runs rich but sprays out of the venturis. it has a aftermarket replacement pump on it could it be oversupplying or overpressurizing? i rebuilt the carb becouse the gaskets were leaking bad but now the gaskets dont leak but it floods. thanks in advance!

 

To answer the 1st question. Compression tests should be done at hot not cold.

As far as the flooding goes try tapping on top of the carb with a hammer. Alot of times after you rebuild a carb if you have turned it upside down the needle seat does not work.

After you get it running right you may want to perform the MMO treatment and redo compression numbers.

 

Yeah, the float rises with the fuel level and moves the needle to shut off the fuel opening. If that is sticky, then the fuel keeps coming in and floods the carb. A lot of times banging on the top of the carb (use something plastic that won't cause sparks) will shake them loose.

On the other hand, if the aftermarket pump is the wrong type it might be running too much pressure and forcing gas past the needle valves. If the car has been doing this since the pump was installed, then that might be the case. Then you would need to install a fuel pressure regulator to reduce the fuel pressure to the desired level.

Good luck...

 

well im in the process of buying it. i have tapped the carb ,floats are floating so im thinking that the pump is just too much. a pick n pull replacement will tell. i just tdont want to finish paying the rest of the cash and spend a bunch of time if the motors toasty.